import { Layout, Playground, Attributes } from 'lib/components'
import { useKeyboard, KeyCode, KeyMod, Keyboard, Input, Link } from 'components'

export const meta = {
  title: '键盘事件 useKeyboard',
  group: '工具包',
}

## useKeyboard / 键盘事件

用户监听多个键盘事件的钩子。

这是一个自定义的 React Hooks，你需要在使用时遵循 <Link target="_blank" color href="https://reactjs.org/docs/hooks-rules.html">钩子的基础规则</Link>。

<Playground
  desc="全局的键盘事件。"
  scope={{ useKeyboard, KeyCode, KeyMod, Keyboard }}
  code={`
() => {
  useKeyboard(
    () => alert('保存成功！'),
    [KeyCode.KEY_S, KeyMod.CtrlCmd]
  )
  return <div>按下 <Keyboard command scale={0.5}>S</Keyboard> 以保存。</div>
}
`}
/>

<Playground
  title="元素事件"
  desc="只在指定元素上监听元素事件。"
  scope={{ useKeyboard, KeyCode, KeyMod, Keyboard, Input }}
  code={`
() => {
  const { bindings } = useKeyboard(
    () => alert('A 是不被允许的'),
    [KeyCode.KEY_A],
    { disableGlobalEvent: true },
  )
  return (
  <div>
    <p>键盘事件只在输入框被触发后才会响应。</p>
    <Input {...bindings} placeholder="输入 A" />
  </div>
  )
}
`}
/>

<Attributes edit="/pages/en-us/components/use-keyboard.mdx">
<Attributes.Title>useKeyboard</Attributes.Title>

```ts
type KeyboardOptions = {
  disableGlobalEvent: boolean,
  stopPropagation: boolean
  preventDefault: boolean
  capture: boolean
  event: 'keydown' | 'keypress' | 'keyup'
}

const useKeyboard = (
  handler: (event: React.KeyboardEvent) => void,
  keyBindings: Array<number> | number,
  options?: KeyboardOptions,
) => void
```

<Attributes.Title>KeyboardOptions</Attributes.Title>

| 参数                   | 描述                             | 类型      | 推荐值                           | 默认      |
| ---------------------- | -------------------------------- | --------- | -------------------------------- | --------- |
| **disableGlobalEvent** | 禁止监听来自 Document 的全局事件 | `boolean` | -                                | `false`   |
| **stopPropagation**    | 停止事件传播                     | `boolean` | -                                | `false`   |
| **preventDefault**     | 阻止事件的默认行为               | `boolean` | -                                | `true`    |
| **capture**            | 设置事件类型为捕获               | `boolean` | -                                | `false`   |
| **event**              | 键盘事件的类型                   | `string`  | `'keydown', 'keypress', 'keyup'` | `keydown` |

</Attributes>

export default ({ children }) => <Layout meta={meta}>{children}</Layout>
